openCom-Companion/sbapp/plyer/platforms/win/filechooser.py

163 lines
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Python
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2022-09-16 18:07:57 +02:00
'''
Windows file chooser
--------------------
'''
from plyer.facades import FileChooser
from win32com.shell.shell import (
SHBrowseForFolder as browse,
SHGetPathFromIDList as get_path
)
from win32com.shell import shellcon
import win32gui
import win32con
import pywintypes
from os.path import dirname, splitext, join, isdir
class Win32FileChooser:
'''A native implementation of NativeFileChooser using the
Win32 API on Windows.
Not Implemented features (all dialogs):
* preview
* icon
Not implemented features (in directory selection only - it's limited
by Windows itself):
* preview
* window-icon
Known issues:
* non-existins folders such as: Network, Control Panel, My Computer, Trash,
Library and likes will raise a COM error. The path does not exist, nor
a user can open from or save to such path.
'''
path = None
multiple = False
filters = []
preview = False
title = None
icon = None
show_hidden = False
def __init__(self, *args, **kwargs):
self._handle_selection = kwargs.pop(
'on_selection', self._handle_selection
)
# Simulate Kivy's behavior
for i in kwargs:
setattr(self, i, kwargs[i])
@staticmethod
def _handle_selection(selection):
'''
Dummy placeholder for returning selection from chooser.
'''
return selection
def run(self):
self.selection = []
try:
if self.mode != "dir":
args = {}
if self.path:
if isdir(self.path):
args["InitialDir"] = self.path
else:
args["InitialDir"] = dirname(self.path)
_, ext = splitext(self.path)
args["File"] = self.path
args["DefExt"] = ext and ext[1:] # no period
args["Title"] = self.title if self.title else "Pick a file..."
args["CustomFilter"] = 'Other file types\x00*.*\x00'
args["FilterIndex"] = 1
file = ""
if "File" in args:
file = args["File"]
args["File"] = file + ("\x00" * 4096)
# e.g. open_file(filters=['*.txt', '*.py'])
filters = ""
for f in self.filters:
if type(f) == str:
filters += (f + "\x00") * 2
else:
filters += f[0] + "\x00" + ";".join(f[1:]) + "\x00"
args["Filter"] = filters
flags = win32con.OFN_OVERWRITEPROMPT
flags |= win32con.OFN_HIDEREADONLY
if self.multiple:
flags |= win32con.OFN_ALLOWMULTISELECT
flags |= win32con.OFN_EXPLORER
if self.show_hidden:
flags |= win32con.OFN_FORCESHOWHIDDEN
args["Flags"] = flags
try:
if self.mode == "open":
self.fname, _, _ = win32gui.GetOpenFileNameW(**args)
elif self.mode == "save":
self.fname, _, _ = win32gui.GetSaveFileNameW(**args)
except pywintypes.error as e:
# if canceled, it's not really an error
if not e.winerror:
self._handle_selection(self.selection)
return self.selection
raise
if self.fname:
if self.multiple:
seq = str(self.fname).split("\x00")
if len(seq) > 1:
dir_n, base_n = seq[0], seq[1:]
self.selection = [
join(dir_n, i) for i in base_n
]
else:
self.selection = seq
else:
self.selection = str(self.fname).split("\x00")
else: # dir mode
BIF_EDITBOX = shellcon.BIF_EDITBOX
BIF_NEWDIALOGSTYLE = 0x00000040
# From http://goo.gl/UDqCqo
pidl, name, images = browse(
win32gui.GetDesktopWindow(),
None,
self.title if self.title else "Pick a folder...",
BIF_NEWDIALOGSTYLE | BIF_EDITBOX, None, None
)
# pidl is None when nothing is selected
# and e.g. the dialog is closed afterwards with Cancel
if pidl:
self.selection = [str(get_path(pidl).decode('utf-8'))]
except (RuntimeError, pywintypes.error, Exception):
# ALWAYS! let user know what happened
import traceback
traceback.print_exc()
self._handle_selection(self.selection)
return self.selection
class WinFileChooser(FileChooser):
'''FileChooser implementation for Windows, using win3all.
'''
def _file_selection_dialog(self, **kwargs):
return Win32FileChooser(**kwargs).run()
def instance():
return WinFileChooser()